Cord tightening device



FIG. 1 is a top perspective view of the base of the cord tightening device;

FIG. 2 is a right side view of the base of the cord tightening device;

FIG. 3 is a left side view of the base of the cord tightening device;

FIG. 4 is a front view of the base of the cord tightening device;

FIG. 5 is a back view of the base of the cord tightening device;

FIG. 6 is a top view of the base of the cord tightening device;

FIG. 7 is a bottom view of the base of the cord tightening device;

FIG. 8 is a bottom perspective view of the base of the cord tightening device;

FIG. 9 is cross section view of the base of the cord tightening device taken at 9 of FIG. 2 ;

FIG. 10 is a top perspective view of the spool of the cord tightening device;

FIG. 11 is a front side view of the spool of the cord tightening device;

FIG. 12 is a back side view of the spool of the cord tightening device;

FIG. 13 is a left side view of the spool of the cord tightening device;

FIG. 14 is a right side view of the spool of the cord tightening device;

FIG. 15 is a top side view of the spool of the cord tightening device;

FIG. 16 is a bottom side view of the spool of the cord tightening device;

FIG. 17 is a bottom perspective view of the spool of the cord tightening device;

FIG. 18 is a top perspective view of the cord tightening device, shown in its assembled configuration, a which includes the base, spool, a spring washer and screw;

FIG. 19 is an exploded view of the assembled cord tightening device of FIG. 18 ;

FIG. 20 is a cross section view of the spool of the cord tightening device taken from line 20-20 of FIG. 15 ;

FIG. 21 is an enlarged view of a portion of the spool of the cord tightening device taken from indication circle 21 of FIG. 20 ;

FIG. 22 is an environmental perspective view of the cord tightening device;

FIG. 23 is a second environmental perspective view of the cord tightening device;

FIG. 24 is a third environmental perspective view of the cord tightening device;

FIG. 25 is a fourth environmental perspective view of the cord tightening device;

FIG. 26 is a fifth environmental perspective view of the cord tightening device, shown in an open configuration. The spring washer and screw have been removed for ease of illustration; and,

FIG. 27 shows a front perspective view of the cord tightening device.

The broken lines rendered in the drawings illustrates the environment of the claimed design and forms no part thereof. 

CLAIM The ornamental design for a cord tightening device, as shown and described. 